First, inform and communicate with parents that children may have the habit of sleeping while eating breast milk, and guide parents to cooperate with kindergartens to help young children. Second, communicate with the child to find out if the child feels insecure, and tell her that nurses and teachers will stay in the classroom all the time while sleeping, and they are safe. Third, if feasible, the nurse can let the neighboring children sleep hand in hand. Or the nurse goes to sleep holding the child's hand.